Certain Relationships and Related Party Transactions (Schedule of Related Party Transactions) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	$ 754,000	$ 781,600
Administrative
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	80,000	88,300
Supervision
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	418,200	461,500
Transportation
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	$ 255,800	$ 231,800